fix(python-run): prompt users to install Docker when execute_python_file encounters a Docker error (#2231)

fix(python-run): make error message more explicit

---------

Co-authored-by: Reinier van der Leer <github@pwuts.nl>

autogpt/commands/execute_code.py

@@ -84,6 +84,12 @@ def execute_python_file(file: str) -> str:
 
         return logs
 
+    except docker.errors.DockerException as e:
+        print(
+            "Could not run the script in a container. If you haven't already, please install Docker https://docs.docker.com/get-docker/"
+        )
+        return f"Error: {str(e)}"
+
     except Exception as e:
         return f"Error: {str(e)}"